The correct answer is: B. Preliminary audit
A preliminary audit is a quick and easy way to get an overview of an energy system’s performance. It uses readily available data, such as utility bills and meter readings, to identify areas where energy is being wasted. This information can then be used to develop a more detailed energy audit or to implement energy-saving measures.
A general audit is a more comprehensive review of an energy system. It includes a review of the system’s design, operation, and maintenance. The goal of a general audit is to identify all of the ways in which energy can be saved.
A safety audit is a review of an energy system to identify potential safety hazards. The goal of a safety audit is to prevent accidents and injuries.
A system audit is a review of an energy system to identify ways to improve its performance. The goal of a system audit is to make the system more efficient and cost-effective.